Simulations now cover up to 20 million items and 50,000 sites via adaptive scopes, policies can be edited without re-running simulation, and new audit insights show coverage and processing activity.
This removes the ceiling that forced large-estate labelling designs into artificial site batches – revisit your simulations and rollout plans you scoped around the old limits.
Scroll down to the Auto-labelling bit to read more: https://www.microsoft.com/en-us/security/blog/2026/09/24/whats-new-in-microsoft-security-september-2026/
